CA2124183C - Active noise control of an enclosure with multiple transducers - Google Patents

Active noise control of an enclosure with multiple transducers

Info

Publication number
CA2124183C
CA2124183C CA002124183A CA2124183A CA2124183C CA 2124183 C CA2124183 C CA 2124183C CA 002124183 A CA002124183 A CA 002124183A CA 2124183 A CA2124183 A CA 2124183A CA 2124183 C CA2124183 C CA 2124183C
Authority
CA
Canada
Prior art keywords
noise
enclosure
noise source
speaker
openings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA002124183A
Other languages
English (en)
French (fr)
Other versions
CA2124183A1 (en
Inventor
Michael P. Mcloughlin
Khosrow Eghtesadi
Dexter Smith
Eldon W. Ziegler, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noise Cancellation Technologies Inc
Original Assignee
Noise Cancellation Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Noise Cancellation Technologies Inc filed Critical Noise Cancellation Technologies Inc
Publication of CA2124183A1 publication Critical patent/CA2124183A1/en
Application granted granted Critical
Publication of CA2124183C publication Critical patent/CA2124183C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1783Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
    • G10K11/17833Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions by using a self-diagnostic function or a malfunction prevention function, e.g. detecting abnormal output levels
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785Methods, e.g. algorithms; Devices
    • G10K11/17857Geometric disposition, e.g. placement of microphones
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785Methods, e.g. algorithms; Devices
    • G10K11/17861Methods, e.g. algorithms; Devices using additional means for damping sound, e.g. using sound absorbing panels
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787General system configurations
    • G10K11/17879General system configurations using both a reference signal and an error signal
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10Applications
    • G10K2210/105Appliances, e.g. washing machines or dishwashers
    • G10K2210/1054Refrigerators
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10Applications
    • G10K2210/106Boxes, i.e. active box covering a noise source; Enclosures
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30Means
    • G10K2210/321Physical
    • G10K2210/3216Cancellation means disposed in the vicinity of the source

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Exhaust Silencers (AREA)
  • Noise Elimination (AREA)
  • Amplifiers (AREA)
  • Transducers For Ultrasonic Waves (AREA)
CA002124183A 1991-12-02 1991-12-02 Active noise control of an enclosure with multiple transducers Expired - Fee Related CA2124183C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1991/008772 WO1993011529A1 (en) 1991-12-02 1991-12-02 Active noise control of an enclosure with multiple transducers

Publications (2)

Publication Number Publication Date
CA2124183A1 CA2124183A1 (en) 1993-06-10
CA2124183C true CA2124183C (en) 1996-08-27

Family

ID=22225986

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002124183A Expired - Fee Related CA2124183C (en) 1991-12-02 1991-12-02 Active noise control of an enclosure with multiple transducers

Country Status (7)

Country Link
EP (1) EP0615648B1 (ja)
JP (1) JPH07504991A (ja)
AT (1) ATE179273T1 (ja)
CA (1) CA2124183C (ja)
DE (1) DE69131170T2 (ja)
DK (1) DK0615648T3 (ja)
WO (1) WO1993011529A1 (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0645004A4 (en) * 1992-06-10 1996-05-08 Noise Cancellation Tech HOUSING WITH ACTIVE ACOUSTIC CONTROL.
US8054984B2 (en) 2006-10-16 2011-11-08 Bsh Home Appliances Corporation Sound altering apparatus
CA2606442A1 (en) * 2006-10-16 2008-04-16 Bsh Home Appliances Corporation Sound altering apparatus
DE102008038751B3 (de) * 2008-08-12 2010-04-15 Fresenius Medical Care Deutschland Gmbh Umkehrosmoseanlage mit einer Vorrichtung zur Geräuschminderung sowie Verfahren zur Geräuschminderung einer Umkehrosmoseanlage
DE102009024343A1 (de) 2009-06-09 2010-12-16 Rohde & Schwarz Gmbh & Co. Kg Elektronisches Gerät mit Geräuschunterdrückungssystem
CN105139861B (zh) * 2015-08-24 2018-08-17 昆明科林科技工程有限公司 一种用于工业噪声治理的有源降噪方法及装置
US10957300B2 (en) 2016-12-13 2021-03-23 Halliburton Energy Services, Inc. Reducing far-field noise produced by well operations
US10789936B2 (en) 2016-12-29 2020-09-29 Halliburton Energy Services, Inc. Active noise control for hydraulic fracturing equipment
WO2022225495A1 (en) * 2021-04-21 2022-10-27 Sariaslan Esra Method for reducing noise in machines

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665549A (en) * 1985-12-18 1987-05-12 Nelson Industries Inc. Hybrid active silencer
GB2204916B (en) * 1987-05-19 1991-10-16 British Gas Plc A silencer
DE68911112T2 (de) * 1988-02-19 1994-05-26 Noise Cancellation Tech Abgasschalldämpfer-anlage für brennkraftmaschnine.
JPH083395B2 (ja) * 1988-09-30 1996-01-17 株式会社東芝 冷却装置の消音装置

Also Published As

Publication number Publication date
JPH07504991A (ja) 1995-06-01
CA2124183A1 (en) 1993-06-10
DE69131170T2 (de) 1999-11-18
DK0615648T3 (da) 1999-11-01
EP0615648A1 (en) 1994-09-21
EP0615648B1 (en) 1999-04-21
WO1993011529A1 (en) 1993-06-10
ATE179273T1 (de) 1999-05-15
EP0615648A4 (en) 1995-04-19
DE69131170D1 (de) 1999-05-27

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed